Power for a modem





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  1. #1
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    Default Power for a modem

    I need power for a modem 12V 2 Amps.
    Any suggestions?

    How about this mini UPS I see it has a 18650 lithium ion battery. Lasts 5 hours.

    i
    https://www.geewiz.co.za/ups/68269-m...tv-router.html.

    Would a power bank ie Romoss etc handle it?
    Last edited by Paul Dold; 2019/12/10 at 12:29 PM.

    ďAfrica changes you forever, like nowhere on earth. Once you have been there, you will never be the same." - Ernest Hemingway

  2. #2
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    Default Re: Power for a modem

    Quote Originally Posted by Paul Dold View Post
    I need power for a modem 12V 2 Amps.
    Any suggestions?

    How about this mini UPS I see it has a 18650 lithium ion battery. Lasts 5 hours.

    i
    https://www.geewiz.co.za/ups/68269-m...tv-router.html.

    Would a power bank ie Romoss etc handle it?
    Have a look at this: cheaper and double the capacity

    https://www.outdoorwarehouse.co.za/p...hoCQ3AQAvD_BwE

    I ran my ADSL modem like this for years
    Last edited by mullerza; 2019/12/10 at 12:31 PM.
    2012 Q7 4.2 TDI
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  3. #3

    Default Re: Power for a modem

    I am in no way technically knowledgeable - so take this from whence it comes:

    This morning with all the load shedding I turned on my UPS which had been switched off since about 4 pm the day before.
    Switched on the Internet WiFi router and started charging two tablets.
    Cell phones and tablets worked off that for an hour before the power came back on.
    Bear in mind also that the UPS is about 4 or 5 years old.
    1000 W unit.
    With computer and screen on though it only lats about 10 - 15 minutes before giving low warnings.

    This is just to give an indication of what kind of power is needed for different applications.

    So I am thinking that the modem does not need that much power ... ??
    Answering the call of the wild is just so much beter than answering the telephone.
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  4. #4
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    Default Re: Power for a modem

    Quote Originally Posted by mullerza View Post
    Have a look at this: cheaper and double the capacity

    https://www.outdoorwarehouse.co.za/p...hoCQ3AQAvD_BwE

    I ran my ADSL modem like this for years
    What he said

  5. #5
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    Default Re: Power for a modem

    Quote Originally Posted by mullerza View Post
    Have a look at this: cheaper and double the capacity

    https://www.outdoorwarehouse.co.za/p...hoCQ3AQAvD_BwE

    I ran my ADSL modem like this for years
    Excludes battery though, but this is pretty cool.

  6. #6
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    Default Re: Power for a modem

    Quote Originally Posted by TimK View Post
    Excludes battery though, but this is pretty cool.
    Totally overpriced though. If you could build it up yourself should not cost more than R100.

  7. #7
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    Default Re: Power for a modem

    Sorry, but that Lumeno one - no go. Bought one - the charger died within a year. Lumeno happily replaced it - charger died again. Soldering quality on the inside of the battery cover was terrible too. I'd also go the DIY route. Most alarm shops or electronics shops should have everything you need.
    ZS6VL


  8. #8
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    Default Re: Power for a modem

    Thanks! But I see it is 1.5 Amps. I need 2 Amps.


    Quote Originally Posted by mullerza View Post
    Have a look at this: cheaper and double the capacity

    https://www.outdoorwarehouse.co.za/p...hoCQ3AQAvD_BwE

    I ran my ADSL modem like this for years

    ďAfrica changes you forever, like nowhere on earth. Once you have been there, you will never be the same." - Ernest Hemingway

  9. #9
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    Default Re: Power for a modem

    Thanks!

    Quote Originally Posted by An3s View Post
    Sorry, but that Lumeno one - no go. Bought one - the charger died within a year. Lumeno happily replaced it - charger died again. Soldering quality on the inside of the battery cover was terrible too. I'd also go the DIY route. Most alarm shops or electronics shops should have everything you need.

    ďAfrica changes you forever, like nowhere on earth. Once you have been there, you will never be the same." - Ernest Hemingway

  10. #10
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    Default Re: Power for a modem

    I would like a device which would run the modem for the extent of load shedding - say four hours.

    Had a ups years ago which performed well but took too long to recharge and there was a strong burning smell when the batteries were charging.

    I could run a cable from the deep cell fridge battery in the car but I would have preferred a standalone unit in the house.




    Quote Originally Posted by Peter1949 View Post
    I am in no way technically knowledgeable - so take this from whence it comes:

    This morning with all the load shedding I turned on my UPS which had been switched off since about 4 pm the day before.
    Switched on the Internet WiFi router and started charging two tablets.
    Cell phones and tablets worked off that for an hour before the power came back on.
    Bear in mind also that the UPS is about 4 or 5 years old.
    1000 W unit.
    With computer and screen on though it only lats about 10 - 15 minutes before giving low warnings.

    This is just to give an indication of what kind of power is needed for different applications.

    So I am thinking that the modem does not need that much power ... ??

    ďAfrica changes you forever, like nowhere on earth. Once you have been there, you will never be the same." - Ernest Hemingway

  11. #11
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    Default Re: Power for a modem

    Just build your self a Load Shredder on wheels

    Click image for larger version. 

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    I bet it will run your modem for more than a day. Last night I ran a steel fan for about 5 hours. I turned it off when I woke up this morning.
    To charge it I use an optimate smart charger.
    JK 3.8L 2010 Rubicon Manual 2 door

  12. #12
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    Default Re: Power for a modem

    Quote Originally Posted by SBSP View Post
    Just build your self a Load Shredder on wheels

    Click image for larger version. 

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    I bet it will run your modem for more than a day. Last night I ran a steel fan for about 5 hours. I turned it off when I woke up this morning.
    To charge it I use an optimate smart charger.
    Kan jy asb nog n paar pics opsit van ander rigtings?

  13. #13
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    Default Re: Power for a modem

    Quote Originally Posted by circe View Post
    Kan jy asb nog n paar pics opsit van ander rigtings?
    Hier is nog n paar fotos fan ander rigtings.

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    Niks spesiaals nie . Sommer maar net n boer maak n plan situasie. Het nie baie tyd aan dit gespandeer nie. Ek het maar net n paar spaar planke aan mekaar gesit om die batery in te hou (102 Ah) "SuperPower" chinese cheapy battery. n bruggie gebou om die inverter op vas te sit. Met n DC volt meter en n skakelaar om die volt meter te kan aan en af sit. Die rooi houer vir die volt meter het ek sommer ge 3d print, maar jy kan dit ook uit hout uit bou. Die shunt om amps te meet is nie gekoppel nie. weet nie hoe om dit te doen nie.

    Ek rol hom in my sit kamer in en gebruik n oprol koord om watook al te kopel.

    Die inverter is wel 700Watt maar ek dink nie dit sal wys wees om 700watt te trek nie. Ek dink 10amps en minder van die battery af is veilig. (Ek reken 10% van die battery se Ah rating sal nie skade doen nie)
    Last edited by SBSP; 2019/12/10 at 08:49 PM.
    JK 3.8L 2010 Rubicon Manual 2 door

  14. #14

    Default Re: Power for a modem

    Quote Originally Posted by Paul Dold View Post
    I need power for a modem 12V 2 Amps.
    Any suggestions?

    How about this mini UPS I see it has a 18650 lithium ion battery. Lasts 5 hours.

    i
    https://www.geewiz.co.za/ups/68269-m...tv-router.html.

    Would a power bank ie Romoss etc handle it?
    I have my doubts..
    Is this for your router and Wi-Fi? (I see the link doesn't work any more)
    I make a 7Ah battery unit (PUP) which will do both for 12 hours
    I will customise the voltage and plugs for your particular needs..

  15. #15

    Default Re: Power for a modem

    Sorry. Forgot the price: R750

  16. #16
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    Default Re: Power for a modem

    I use a 7AH sealed lead acid battery (like the ones in gate motors or alarm backups) and connected a power socket to the battery and just plug it into the modem where the normal power supply goes in since its 12V anyways - seems a waste to invert 12v to 220v just to step it down to 12v again with the transformer that came with the modem.


    Assuming your modem has a regular socket like this
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  17. #17
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    Default Re: Power for a modem

    Quote Originally Posted by Paul Dold View Post
    I need power for a modem 12V 2 Amps.
    Any suggestions?

    How about this mini UPS I see it has a 18650 lithium ion battery. Lasts 5 hours.

    i
    https://www.geewiz.co.za/ups/68269-m...tv-router.html.

    Would a power bank ie Romoss etc handle it?
    Look carefully. This unit is no good to you. It needs a 12V input to charge it. That is to say you still need to purchase a 12V supply/charger to make it work.

    Go for Richards PUP.
    Cheers

    ZS5KAD
    3 V8's
    NA TwinTurbo SuperCharger
    A V6 and an inline 4

    The frogs are starting to notice that the water is getting warm but it is already too hot to do anything about it.....

  18. #18
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    Default Re: Power for a modem

    And my setup easily runs 12+ hours on the wifi adsl modem. Although my new modem unlike the previous one runs off 9V soo I had to get a small buck regulator to step the 12v battery down to the 9v it requires.
    NEW Project: Daihatsu ROCKY (Balboa) 4x4 2.8

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  19. #19
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    Default Re: Power for a modem

    Quote Originally Posted by WAJ View Post
    I use a 7AH sealed lead acid battery (like the ones in gate motors or alarm backups) and connected a power socket to the battery and just plug it into the modem where the normal power supply goes in since its 12V anyways - seems a waste to invert 12v to 220v just to step it down to 12v again with the transformer that came with the modem.


    Assuming your modem has a regular socket like this
    You still need some way to charge the battery.
    Cheers

    ZS5KAD
    3 V8's
    NA TwinTurbo SuperCharger
    A V6 and an inline 4

    The frogs are starting to notice that the water is getting warm but it is already too hot to do anything about it.....

  20. #20
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    Default Re: Power for a modem

    Quote Originally Posted by Fluffy View Post
    You still need some way to charge the battery.
    Easy, I just connect the regular car battery charger and charge it till full.

    OK granted its not an automatic solution, one still needs to plug and unplug the setup yourself but since I am still more or less not dead yet I can easily do it without working up a sweat
    NEW Project: Daihatsu ROCKY (Balboa) 4x4 2.8

    Platkar Haaihoendaai i20 1.4

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